package com.sky.interceptor;

import cn.hutool.core.util.StrUtil;
import com.sky.constant.JwtClaimsConstant;
import com.sky.context.BaseContext;
import com.sky.properties.JwtProperties;
import com.sky.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @Author:篍
 * @Date: 2025/08/25 15:54
 * @Description:
 */
@Slf4j
@Component
public class JwtTokenUserInterceptor implements HandlerInterceptor {

    @Autowired
    private JwtProperties jwtProperties;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //判断当前拦截到的是Controller的方法还是其他资源
        if (!(handler instanceof HandlerMethod)) {
            //当前拦截到的不是动态方法，直接放行
            return true;
        }

        String token = request.getHeader(jwtProperties.getUserTokenName());
        if (StrUtil.isBlank(token)){
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
            return false;
        }
        log.info("jwt校验:{}", token);
        try {
            Claims claims = JwtUtil.parseJWT(jwtProperties.getUserSecretKey(), token);
            Long userId = Long.parseLong(claims.get(JwtClaimsConstant.USER_ID).toString());
            BaseContext.setCurrentId(userId);
        } catch (Exception e) {
            log.error(e.getMessage());
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
            return false;
        }
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        BaseContext.removeCurrentId();
    }

}
